Sentences with phrase «carving deep channels»

He spent his lifetime piecing together the story of how a raging wall of water hundreds of feet high roared across eastern Washington, carving deep channels before cascading down the Columbia River Gorge as a wall of water high enough to turn Oregon's Willamette Valley into a vast backwater lake.

Not exact matches

Construction began in 1975, when workers carved a 1.3 - mile - long, 300 - foot - deep, 490 - foot - wide diversion channel to re-route the Paraná River to make way for the dam.

He realized the chaotic landscape had been carved by an enormous flood that chewed deep channels through hundreds of feet of solid basalt.

But mapping with ice - penetrating radar has revealed a low - lying region cut by glacially carved channels that drop as far as 8,500 feet below sea level — perfect for guiding warm ocean water deep into the heart of the ice sheet.